Square kilometres to Square metres
Convert square kilometres to square metres (km² to m²). 1 km² = 1,000,000 m². Use the calculator, formula and conversion table.
How to convert square kilometres to square metres
Multiply the amount in square kilometres by 1,000,000 to get square metres. The displayed factor and results are rounded to 12 significant digits.
m² = km² × 1,000,000Worked example
1 km² = 1,000,000 m². Change the amount in the calculator above to use your own value.
Units and assumptions
Area uses squared length factors: one square foot is exactly 0.09290304 square metres. Acres are international acres; hectares equal 10,000 square metres.
Calculator results use floating-point arithmetic and are rounded for display. The reference table below uses up to 12 significant digits.
Square kilometres to Square metres table
| Square kilometres (km²) | Square metres (m²) |
|---|---|
| 0 | 0 |
| 1 | 1,000,000 |
| 5 | 5,000,000 |
| 10 | 10,000,000 |
| 25 | 25,000,000 |
| 100 | 100,000,000 |
| 1,000 | 1,000,000,000 |
About this conversion
What is the formula for square kilometres to square metres?
m² = km² × 1,000,000. Multiply the amount in square kilometres by 1,000,000 to get square metres. The displayed factor and results are rounded to 12 significant digits.
How do I convert back to square kilometres?
Use the square metres to square kilometres calculator to reverse this conversion. You can also use Swap units in the calculator above.
Can I use a different pair of units?
Choose another unit in the calculator, or open the area converter to browse all supported pairs.